Investigators say he made threats to shoot up the mosque several times, and told the officer, "I just want to give these freaking people a taste of their own medicine, you know? They are the ones who are always doing these shootings, the killings."

Bolatete was arrested Friday when investigators say he asked that officer for help purchasing a silencer, saying he didn’t want paperwork associated with the sale.

The FBI said a civil rights investigation is underway and Bolatete could face more charges.

Pedro Bolatete said that isn’t his brother.

“I just want to let people know that I think [people have] already decided that he’s something bad, somebody bad, a terrorist -- I saw that on the news. I can’t imagine,” Pedro Bolatete said. “My brother is very gentle.”